2016年9月10日,我和孙常青老师带我校19名同学去兰州参加全国数学联考甘肃省决赛。甘肃赛区考点设在兰州一中,每个考场按照一个兰州学生,一个兰外学生,间隔排列。考试结束后,在回来的路上,和学生闲聊中,我班同学告诉我,兰州的学生在老师发卷时,接到卷子时会小声说声谢谢,而兰外的学生则没有。这件事情刚听到,只感到有点不同,也没觉得多重要。但后来我静下心来,想起这件事,让我出了一身汗,我仔细考虑了一 On September 10, 2016, with my teacher Sun Changqing, I took 19 students from our school to Lanzhou to attend the national mathematics entrance exam Gansu provincial finals. Gansu Division test center located in Lanzhou, each examination room in accordance with a Lanzhou students, an overseas student, arranged at intervals. After the exam, on the way back, chatting with the students, my classmates told me that Lanzhou students whispered thank you when they received the paper when they were curled up. Lan students did not. I just heard a little different from this incident and I did not think it important. But then I stopped, I remembered this, let me out of a sweat, I carefully considered a